MCQ Practice Science 📖 Farmers can keep their soil fertile by-- ক Crop rotationখ Irrigationগ Regular tillingঘ Repeatedly growing the same crop Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up Previous Every molecule of water contains-- Oxygen and --Hydrogen. Next Fish preathe through--